Abstract
In this communication and information era, high speed and wide bandwidth wireless communications system are highly demanded. Undoubtedly, antennas play a crucial role in the systems. A novel feeding technique by using L-shaped probe was invented. Through this technique, the inherited narrow bandwidth problem of conventional planar antenna can be solved. As a result, wide band antennas that can be operated at GSM, PCS, CDMA, UMTS, or multibands with specific characteristics such as dual-polarized radiation have been designed. Due to low fabrication cost and simple structure, the antennas have very good market value. A company has been set up in Yantai, Shandong of PRC to manufacture and market the antennas.

Features
• Both the bandwidth and gain can be improved substantially compared to the conventional microstrip antennas with a thin substrate
• Can be designed for circular polarization radiation
• Simple in design and low fabrication cost

Applications
• Base station antennas for Personal Communication Systems

Contact Information
Mr H Y Wong
Director, Technology Transfer Office
City University of Hong Kong
83 Tat Chee Avenue
Kowloon, Hong Kong
Tel : (852) 2788 8428
Fax : (852) 2788 9119
Email : hy.wong@cityu.edu.hk